Mold.



M 0L D.

(Application filed Nov. 20, 1899.)

.2 Sheets-Sheet I.

(No Model.)

Immun Il Hah aseos o@ ae me( m9 D@ QQ e0 Patented Nov. 20, |900.

c. F. HAGLIN.-

MOLD."

(Application led Nov. 20, 1899.1

(No Modal.)

2 Sheets-Sheet 2.

waa

llnrrnh STATES nrnivr Ormes.

CHARLES E. HAGLIN, OF MINNEAPOLIS, MINNESOTA.

lVlOLD.

SPECIFICATION forming part of Letters Patent No. 662,266, dated November20, 1900.

Application filed November 20, 1899. Serial No. 737,600. (No model.)

To all whom `it may concern:

Be it known that I, CHARLES F. HAGLIN, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements in Molds;and I do hereby declare the following to be a full, clear, and exactdescription ofthe invention, such as will enable others skilled in, theart to which it appertains to make and use the same.

My invention has for its object to provide an efficient mold or formingdevice for use in the construction of concrete bins. Such bins aredesirable in the construction of grain-elevators and other storagebuildings. Usually these bins are round or cylindrical; but they maytake other forms and maybe eithersquare or hexagonal in cross-section,for example.

To the above ends my invention consists of the novel devices andcombinations of devices hereinafter described, and defined in theclaims.

The invention is illustrated in the accompanying drawings, wherein likecharacters indicate like parts throughout the several views.

Figure l is a plan view of the `complete mold. Fig. 2 shows the moldprincipally in side elevation, but with some parts sectioned, the samebeing secured to the upper portion of a bin which is in the process ofconstruction. Fig. 3 is a transverse vertical section on the line'003003 of Fig. l, with the mold shown as raised or in position tocontrol the formation of the next layer or vertical section of theconcrete bin. Fig. 4 is a section on the same line as Fig. 3, butshowing the mold loosened from the last-formed section of the concretebin and showing also one of the seva cylindrical bin, is made up ofsegmental cylindrical sections spaced apart to form two com pleteconcentric moldboards, between which the cement is filled in in theprocess of the construction of the bin. As shown, each section of themold extends through ninety degrees or one-fourth of a circle, or, inother words, each moldboard is formed by four sections. Of course anydesired subdivision of the moldboard in excess of three may be made, andit might be possible to use but two sections. Each mold-section is madeup of a metallic framework consisting in the construction illustrated ofsegmental horizontally-extended pairs of angle-irons 2, tied together hyvertical angle-irons 3, constituting vertical projections, the saidangle-irons be` ing secured together by short nutted bolts 4E.Theadjacentendsofthesegnemtalangle-irons 2 nearly, but not quite, abutor meet, and detachable joints are formed between the same by means ofvertically-spaced plates .5, riveted to one of the abutting members andoverlapping with the horizontal flange of the oonnected member, as bestshown in Fig. 5. The projecting ends of the jointplates 5 are providedwith alined perforations, and the horizontal iiange of the segmentalangle-iron 2 embraced thereby is also provided with a perforation, butwhich is slightly out of line with the perforations of said joint-plates5,through which a wedge-shaped lock-key 6 is passed to connect themold-sections, as hereinafter more specically described. At their upperportions the vertical angle-irons 3 are spaced apart by pairs ofhorizontally-disposed spacing rods or bolts 7, that are screw-threadedat their ends and provided with pairs of nuts 8. The screw-threaded endsof the bolts 7 are passed through suitable perforations in the parallelflanges of the anglewirons 3 and the pairs of nuts 8 clamp the saidflange between them. Thus the concentric annular frames are properlyspaced apart, as will hereinafter more fully appear.

By reference to Fig. et, wherein one of the.

segmental irons is omitted, it will be noted that the outturned flangesof the vertical angle-irons 3 are perforated by L-shaped seats 9, whichfit said segmental angle-irons 2 and through which the latter arepassed.

The outer annular framework is provided with an inner covering, and theinner annu- TOO ' disposed' planks 10, which are shown as secured to thesegmental angle-irons 2 by means of screws l1. The planks extend aboveand below the horizontally-extended angleirons 2 and terminate at theirupper ends below the lower members of the spacing-rods 7. In forming thelowermost or first section or layer of the concrete bin the cement isfilled in between the concentric moldboards formed by the verticalboards 10. Then as soon as the cement has sufficiently hardened or setthe entire moldvis raised until the lower ends of the boards 10 overlaponly the eXtreme upper portion of the section of the bin thus formed,this position being illustrated in Fig. 3. To accomplish the aboveadjustment or raising movement of the mold, it is necessary to loosenthe section of the mold from the section of the bin thus formed.

The action of the couplings formed by the plates 5 and wedges orlock-keys will now be v stated. The said wedges or lock-pins 6 havecamming actions on the horizontal iianges of the segmental angle-irons2, so that by driving the said wedges or pins downward the sections ofthe inner mold frame or board will be forced apart, while the sectionsof the outer mold frame or board will be drawn together. Otherwisestated, when the wedges or lock-keys 6 are driven upward or removed thesegmental sections of the outer mold may be drawn apart, while thesections of the inner moldboard may be forced slightly together. Inorder to force the sections of the inner moldboard together, so as toloosen the same from the bin, it will be necessary to remove one or moreof the planks 10. It will also be necessary to loosen the nuts 8 of thevspacing-bolts 7 in order to permit the mold to be readily raised.

As this mold is very' large and heavy, a power device is required toraise the same, and as a simple and efficient means for accomplishingthis end I employ several jackscrews 12 and lifting-frame 13. Theliftingframes 13 are shown as approximately V- shaped, flattened at theapex and provided at their lower ends with hooks or lugs 14, adapted toengage under the flanges of the upper angle-irons 2, as shown in Fig. 4.The jack-screws 12 being applied as illustrated in Fig. 4, the mold maybe raised, as already indicated. The lifting-frame 13 may be removedfrom working position in several different ways-as, for instance byspringing the legs thereof apart far enough to permit the lugs 14 or oneof them to clear the angle iron 2. The lifting devices above describedmay therefore be easily applied and removed.

When the mold is raised approximately to the position relative to thelast-formed section of the bin, (indicated in Fig. 3,) the lower portionthereof is clamped onto the said bin by properly adjusting the nuts 8,and the mold is then supported from the bin without the use of thelifting devices above described. It will of course be understood thatthe next hsection or layer of the bin is formed by filling in concretebetween the concentricallyspaced moldboards of the mold, secured asabove noted and illustrated in Fig. 3.

The bin should of course be thicker at the bottom than at the top, and'to provide for this additional layers of planks may be added to eitherone or the other of the concentric moldboards, and, as illustrated inFig. 3 and as preferred, the additional layer (indicated by dotted linesand marked 15) is added to the outer moldboard, vso that the innersurface of the bin is formed with a constant diameter throughout itsvertical length. These additional planks 15 may be screwed or otherwisesecured to the planks 10, and at their lower ends they should terminateabove the lower ends of the planks 10, to which they are secured.

In Fig. 6 the spacing-bolts 7, instead of being screw-threaded andprovided with nuts, are perforated and provided with tapered keys orwedges 16, which operate as substitutes for the nuts.

It will be understood that my invention above described in its preferredform is capable of many modifications of construction within the scopeof my invention. In lieu of the keys or wedges 6 and the joint-plates 5cam devices andvarious. other forms of connecting-joints may beemployed.

It will be further understood that my invention is not limited to anannular or cylindrical mold adapted to form cylindrical bins, but isbroad enough to include molds for the above purpose-to wit, theformation of concrete bins having cross sections of square or hexagonalform, for example, in which case the mold would be made up ofsupplemental sections of the proper form to give the desired bin. Again,it will be under IOO IIO

stood that the mold or device above described is as well adapted to'theformation of concrete water-tanks as it is for the above-noted purpose,and the term bin, as used in the claims, is intended to include suchwatertanks and similar receptacles.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

1. A device for use in the construction of concrete bins, comprisingapproximately parallel moldboards having vertical projections, andspacing and clamping devices connecting said projections above themoldboards,where by said moldboards may be properly spaced from aboveand may be drawn and clamped onto the hardened top layer of thepartiallyformed bin, substantially as described.

2. A'mold foruse in the construction of concrete bins, comprisingconcentric annular moldboards having vertical projectionsextending abovesaid moldboards, and spacing bolts or rods arranged in pairs to tietogether the upper parts of said vertical projections v IIS the upperends of said vertical projections 3, xo substantially as described.

In testimony whereof I afx my'signature in presence of two Witnesses.

CHARLES F. HAGLIN.

Witnesses:

M. M. MCGRARY, F. D. MERCHANT.

